Oow milkee



5 Sheets-Sheet 1. J. NIELSEN. y

(No Model.)

00W MILKER.

No. 496,581.' Patented May 2, 1893. l

l/V/ r/vEssEs (No Model.) 5 sheets-sheet 2.

J. NI'YELSIINl cow MILKER.

No.v496,581. Patented May 2, 1898.

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(No Model.) 5 Sheets-Sheet 3.

J NIELSEN.

, l00W MILKBR.

No. 496,581. Patented May 2, 1893,.

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J. 'NIELSEN 00W MILKBR.

(No Model.)

Patented May 2l, 1893.

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(No Model.) 5 seefs-sheet 5.

` J. NIELSEN.

n GoW-MILKER. No. 496,581. Patented May 2, 1893.

UNITED STATES- vPATENT OFFICE.

.TENS NIELSEN, OF COPENHAGEN, DENMARK.

CW-MILKER.

SPECIFICATION forming part of Letters Patent No. 496,581, dated May 2, 1893.

P .dpplication filed December 1, 1891. Serial No. 413.644. (No model.) l

To all whom it may concern,.-

Be it known that I, .I ENS NIELSEN, manufacturer, a citizen of Denmark, residing at Copenhagen, Denmark, have invented certain new and useful Improvements in a Cow-Milking Apparatus, of which the following is a specification.

This invention relates to improvements in cow-milking apparatus, and the object of my invention is to provide an apparatus of this kind which is simple in construction, effective in operation and which does not act injuriously upon the teats of the cow.

The invention consists in the combination with a frame of rocking and reciprocating pads in the same, and mechanism for operating said pads, which mechanism consists vof eccentric disks on a main shaft and means for transmitting motion from said eccentric disks to the pads.

The invention also consists in the construction and combination of parts and details which will be fully described hereinafter and finally pointed out in the claims.

In the accompanying drawings, Figures l to 4 are diagrammatic views showing the different positions of the pressing and milking pads in relation to the teats. Fig. 4@ shows the apparatus as applied on a cow, and in use. Fig. 5 is an end-elevation of the milking apparatus. Fig. 6 is a detail vertical-sectional View of one of the pads. Fig. 7 is asectional planview of the milking-machine on the line C C of Fig. 5. Fig. 8 is an end-view of a modied construction. Fig. 9 is an end-view of-a further modification. Fig. l0 is a plan-view of the top or covering plate.

Similar letters of reference indicate corresponding parts.

Fig. l shows the positions of the pads at the beginning of the milking-operation on one teat t, in vwhich position the upper ends of the pads h compress the teat at' its upper end; they then rock and roll down along the teat, as shown in Figs. 2 and 3, the teat constantly remaining compressed between said two pads, so as to force out the milk. Toward the end of the milking operation the lower ends of the pads compress the lower part of the teat, as shown in Fig. 3, and are then separated from each other and fromthe teat, as shown in Fig. 4..

paratus.

Figs. 5 and 6 show a milking apparatus with two pairs of rocking and reciprocating pads. As both end-parts of the machine are alike; only half of the machine has been shown in Fig. 7.

The shaft a3, provided with a crank-handle a7 is mounted to turn in said pieces m2 of the frame, and is connected in a manner that will be described hereinafter with the pressingpads h', which are each provided with two endpivots h2, that are mounted in sliding-boxes h3, which boxes are guided in the longitudinal slots m of the end-pieces m2 of the frame. Said end-pieces m2 of the frame are connected at their ends by the rods m3, which rods m3 and end-pieces m2 form the frame of the ap- On each end-pivot of one pair of pads at one side of the machine the eccentric frames b b2 are keyed or fastened in any suitable manner, and said eccentric frames surround the eccentric disks a and a2 fixed on the shaft a3. As both ends of the machine are constructed alike, each pad will be connected with two eccentric frames, one at each end of the machine, and the corresponding disks must be provided on each end of the shaft as. The two eccentric disks a and a2 on the same end of` the shaft as are fixed in relation to each other atan angle of one hundred and eighty degrees, and the eccentrics at both ends of the shaft a3 are arranged in the same manner, sothat when the shaft as is rotated the pads h of each pair are alternately moved toward and from each other, and at the same time thel rocking motion necessary for milking is imparted to the same.

In case the machine is provided with two pairs of milking pads, as shown in Figs. 5 and 7, only one pair is connected with the eccentric frames, whereas the other pair of pads is provided on each end-pivot with iixed transverse arms df or d2, which arms are connected by means of the pivoted connecting-.rodsd3 and d4 with the corresponding eccentricpieces of the first pair of pads, whicheceentric-frames for this reason have an approxi'- mately angular shape so thatthe connectingrods cl3 and d4 with the eccentric-frames and .the arms d and d2 form parallelograms, by

IOO

which the pads of one pair approach each other while the pads of the other pair are be? ing drawn fromeach other, and so that one .is being moved from the teats.

pair of pads acts on the teats, while the other The pads themselves are made elastic, and as shown in Fig. 6 consist of a bent elastic metal plate e', which by means of a flat baro and suitable fastening devices is attached to a bar g, within the hollow pad, on the ends of which bar g the end-pivots h2 for the pads are formed. The rounded, convex outer surface of each pad is provided with a covering layer e2 of rubber.

Fig. 8 shows a machine similar to the one shown in Figs. 5 and 7, but in this construction only the outer pad of each pairis mounted to reciprocate and to be rocked,whereas the inner pad of each pair is only rocked during the milking-operation. The outer pads of each pair are operated by the same means as shown in Figs. 5 and 7, that is, the eccentrics a on the shaft a3, the eccentric-frames` The shaft a3 also carries b, the arms d3, &c. on it an eccentric-disk a4 and a forked piece b4 is fastened to the end-pivot h2 of one inner pad, said end-pivots of the said inner-pad being mounted in openings of the end-pieces m2 of the frame. The shanks of the forked-piece b4 embrace the eccentric-piece a4, as shown in Fig. 8. The forked-piece b5 is fixed on the end-pivot h2 of the inner pad and embraces a crank-pin a5 projecting from the eccentricdisk a. The crank-pin a5 and the eccentricdisk d4 are arranged in relation to each other at an angle of one hundred and eighty degrees, and are also so arranged and located that the corresponding segments always remain parallel during the rocking movement, so that the segments can easily be separated so as to introduce the teats; the end-pivots of one of the inner pads is mounted in the end lever fv, mounted on the pivots o? on the vinner surfaces of the end-pieces m2 of the frame, the said end-pivots being adapted to move in the curved slots @s in the end-pieces m2, one of which curved slots is shown indotted lines in Fig. 8. The lower ends 'of the levers e are connected by a cross piece 04,

which is provided with a spring-catch U5 thatl can engage the cross-pin m3 of the frame after the pad has been adjusted. In order to give Ithe said pad a greater space to move in, the inner pads of each pair are arranged` as close as possible to the shaft a3. When the teats are to be introduced between the pads, the

crank is turned so as to bring the pads into position as shown in dotted lines, Fig. 8. The spring-catch o5 is disengaged from the crossbar m3 and the pad connected with the levers o isA moved toward the shaft a3 soas to permit of introducing the teat.

only one pad of each pair is reci procated and rocked and the other pad of each pair is only Figs. 5 and 6, and for this reason the parts have beenr designated by the same letters. The outer pads are rocked by means of the two eccentrics a4 and 0,6 on the shaft a3 and the two forked pieces embrace the eccentrics a4 and a and are fastened on the end-pivots of the outer pads. The eccentrics and the forks can be arranged at one or both sides of the machine, and so as not to confuse the drawings theyhave been shown in dotted lines. As the forks are worked the same as those shown in the construction in Fig. 8, the same letters of reference have been used. The inner pads Vare operated by the eccentric a2 and frame b2. For the purpose of moving the pads from each other when the teats are to be introduced, the outer pads have their end pivots h2 mounted in the arms z/-at pivoted arms m4, which it into f :orrespondirlg notches in the end-pieces. Said arms m4 are mounted to turn on the pivots m5, between the end-pieces and are provided with downward extensions carrying the pivoted nuts m6, into which the right and left hand threaded parts m7 of a spindle m4 are screwed, said spindle having a handle mS for turning it. By turning the spindle, the Vsaid levers m4 can be swung from each other, andv after the teats have beenintroduced can be moved back into position shown in full lines in Fig. 9 by reversing the direction of-rotation of the spindle. According as more or less pressure is required to press the teats', the pads must be adjusted accordingly, so that during vtheir' movements they approach each other very closely,`or a greater or less distance remains between them. In each construction shown the mechanism for rocking one pad of each/pair can be omitted and the segment that is not rocked can then be replaced by a flat cushion.

The casing of the machine is preferably made with a top-plate m9 which is bentmore or less in the shape of the udder and vis provided either with two long slots t2 for two teats, or with four smaller round holes is one for each teat.

A yoke-shaped frame A is applied on the rear part of the cow and by means of a strap B, the frame C of the milking apparatus is suspended from said frame A.

D is the funnel held on the bottom of the frame, E is an outlet tube leading from said funnel to the milk-pail F.

Gis an arm attached to the frame C and provided with a handle H for holding it.

J is a sprocket-wheel provided with aci-ankhandle K and L is a driving-chain for trans` mitting motion from the sprocket-wheel Il to a wheel on the driving axle a3 of the machine. Fig. 9 shows a further modification, in which IOO IIO

pads of the two pairs parallel during their 'movements and mechanism for moving theV pads of one pair toward each other, while the pads of the other pair are being moved from each other, substantially asset forth.

2. In a cow-milking apparatus, the combination with a frame, of reciprocating' and rocking milking pads, mechanism for operating said pads and mechanism for separating 

